Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Q. Increase in velocity of water due to afflux?
Specific energy Ef in m per m3 of flow is the energy measured with respect to bottom and hence comprising potential head D and velocity head V2/2g also in m. Thus Ef equals summation of D and V2 /2g. When bridge waterway is constricted by making the bridge narrower than the channel width, discharge intensity q increases at the bridge section. A line of constant specific head Ef in the subcritical flow region, it is seen that river discharge with a particular specific head can pass through the bridge with different discharge intensities q implying different constrictions. Bigger the constriction, higher the value of q and lesser the depth D.
The velocity head v2 /2g correspondingly becomes higher. Such progressive constriction of bridge waterway and increase in discharge intensity is, however, possible only up to a limit which is reached at critical stage. If further constriction is caused, the available specific energy will be insufficient to pass the discharge and hence flow will head up on upstream side of the bridge to force the discharge through. This heading up then becomes apparent as afflux and its effect is felt as backwater over long reaches. On the down stream side the energy built up in formation of afflux is dissipated by generation of hydraulic jump. Conditions leading to afflux on upstream and jump on the downstream side of constricted waterway of a bridge are possible when the bed is nonscourable. When riverbed is sandy, increased velocities in the constriction develop bed scour. This condition is considered separately.
how to understand maps easily?
A retaining wall 9 m high retains cohesion less soil, with an angle of internal friction 33°. The surface is level with the top of the wall. The unit weight of the top 3 m of the f
what is fist class brick?
Strength of Concrete at the Transfer Stage Concrete strength in the member at the transfer stage should conform to the design requirements. The frequency of the sampling and t
A wall with a smooth vertical back and 9 metres high retains a moist cohesionless soil with a horizontal surface. The soil weighs 15 kN/m3 and has an angle of internal friction of
Determine the term - Final Tension The tension in tendons after losses of prestress have taken place is called as final tension. Final tension is taken to be corresponding to
difination of magnative bearing
Explain Flocculation Most important factor effecting particle removal efficiency objective - to bring particles into contact so that they will collide, stick together
Determine the Characteristic Load for structure The Load, which has 95 percent probability of not being exceeded during the life of a structure, is considered as characteristic
friction circle method of stability of slope
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd